Underwater hockey stick



FIG. 1 shows a top plan view of an underwater hockey stick showing my new ornamental design;

FIG. 2 shows a side elevational view showing my new design; the opposite side is a mirror image of the view shown;

FIG. 3 is a bottom plan view showing my new design;

FIG. 4 is a front elevational view in the direction of arrows 4--4 of FIG. 3; and

FIG. 5 is a back elevational view in the direction of arrows 5--5 shown in FIG. 3. 

The ornamental design for an underwater hockey stick, as shown and described. 